package com.jinpeng.springbootsendmail.service.impl;

import com.jinpeng.springbootsendmail.service.MailService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import org.thymeleaf.ITemplateEngine;
import org.thymeleaf.context.Context;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;

/**
 * @ProjectName: springboot-sendmail
 * @Package: com.jinpeng.springbootsendmail.service.impl
 * @ClassName: MailServiceImpl
 * @Description: java类作用描述
 * @Author: 唐朝
 * @CreateDate: 2019/12/27 15:45
 * @UpdateUser: 更新者
 * @UpdateDate: 2019/12/27 15:45
 * @UpdateRemark: 更新说明
 * @Version: 1.0
 */
@Slf4j
@Service
public class MailServiceImpl implements MailService {

    @Autowired
    private JavaMailSender mailSender;

    @Autowired
    private ITemplateEngine templateEngine;


    @Value("${mail.from}")
    private String from;
    /**
     * 简单的文本邮件
     *
     * @param to
     * @param subject
     * @param content
     */
    @Override
    public void sendSimpleMail(String to, String subject, String content) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom(from);
        message.setTo(to);
        message.setSubject(subject);
        message.setText(content);

        try {
            mailSender.send(message);
            log.info("简单邮件已经发送。");
        } catch (Exception e) {
            log.error("发送简单邮件时发生异常！", e);
        }
    }

    /**
     * html邮件
     *
     * @param to
     * @param subject
     * @param content
     */
    @Override
    public void sendHtmlMail(String to, String subject, String content) {
        MimeMessage message = mailSender.createMimeMessage();

        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content,true);

            mailSender.send(message);
        } catch (MessagingException e) {
            e.printStackTrace();
            log.info("发送html邮件失败！");
        }
    }

    /**
     * 带附件的邮件
     *
     * @param to
     * @param subject
     * @param content
     * @param filePath
     */
    @Override
    public void sendAttachemntMail(String to, String subject, String content, String filePath) {
        MimeMessage message = mailSender.createMimeMessage();

        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content,true);

            FileSystemResource file = new FileSystemResource(new File(filePath));
            String fileName = filePath.substring(filePath.lastIndexOf(File.separator));
            helper.addAttachment(fileName,file);

            mailSender.send(message);

        } catch (MessagingException e) {
            e.printStackTrace();
            log.info("发送带附件邮件失败！");
        }
    }

    /**
     * 嵌入静态资源的邮件
     *
     * @param to
     * @param subject
     * @param content
     * @param rscPath
     * @param rscId
     */
    @Override
    public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId) {
        MimeMessage message = mailSender.createMimeMessage();

        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);

            FileSystemResource res = new FileSystemResource(new File(rscPath));
            helper.addInline(rscId, res);

            mailSender.send(message);
            log.info("嵌入静态资源的邮件已经发送。");
        } catch (MessagingException e) {
            log.error("发送嵌入静态资源的邮件时发生异常！", e);
        }
    }

    /**
     * 发送模板邮件
     *
     * @param to
     * @param subject
     * @param username
     */
    @Override
    public void sendTemplateMail(String to, String subject, String username) {
        Context context = new Context();

        context.setVariable("username",username);
        context.setVariable("id","006");

        String emailContent = templateEngine.process("emailTemplate", context);

        sendHtmlMail(to,subject,emailContent);
    }
}
